Pressure-regulating device.



, lL-KADOW. PRESSURE REGULATING DEVICE. APFLlQATION -i' ILED' NOV. 4,I914.

1,199.900. Patented Oct. 3,1916.

'I/ITNESSES INVEN OR.

I TOM/ AUGUST KADOW, F TOLEDO, OHIO, ASSIGIL J'OR T) THE WESTLAKEMACHINE COMPANY, 01? TOLEDO, OHIO, A CORPORATION OFQHEO.

rnnssunn-nneurarrne Device.

Specification of Letters Patent.

Patented Oct. 3, 1916.

Application filed. November 4, 1.914. Serial No. 370,223.

T0 all 'w hom may concern:

it knownthat 1, AUGUST Kanow, a citizen of the United States, residingat Toledo, ih'the county of Lucas and State of 5 Ohio, have inventedcertain new and useful Improvements in Pressure-Regulating Devices, ofwhich the following is a specifi cation.

My invention relates to a device for regulating the flow of fluid underpressure, for

example compressed air, and the principal object of the invention is toprovide a pressure regulating device which will be ca pable of veryclose adjustmentand in which the friction of the co-engagingparts isreduced to a minimum. so that the'pressure of the thud on the lowpressure side or the tie vice may be varied by very slight, almostinfinitesimal gradations, and will be main- 29 tained, regardles ofvariations on the high pressure side, at precisely the point desired.

While realizing that the pressure ,regulating device of my inventionmight be'used n in various different apparatuses and 1201' controllinggases or other fluids of various sorts the device is. articularl' desined for use in regulating the air pressure used 1n blowing glassarticles by automatic machinery. In machinery of this character it 39 isessential that the pressure of air employed in the blowing operationbecapable of the minutest and most accurate regulation. The periods oftime during which the blanks are subjected to the. blowing op- 35oration are. necessarily fixed as to their length by the automaticcharacter of the operations performed by the machine. Glass, in thesemi-solid condition in which it is blown, is an extremely delicatematerial to handle. Any slight variation in the pressure of the air,oneiva'y' or the other, from the pressure required, results in spoilingthe article. This is particularly so if the blown glass articles arethin, as i nthecase of elecw tric light bulbs. The pressure regulatingdevice of my invention has, as a matter of fact, been devisedparticularly with a view to providing means for regulat ng the airpressure employed in an automatic 1200.:

chine for manufacturing electric light bulbs.

Most,'ifnot all, of the pressure regulating deviceson them arket weretried and found deficient either because incapable of the minuteregulation required, or unreliable in the maintenanceof the pressure atthe de- ,justing memberl ,sired point. The perfection of the glassblowing machine in question was condi- 'tioned upon the production of asuitable pressure regulator and other air controlling (lBVlCGS wherebythe blowing operation could be accurately and reliably controlled.

The invention is illustrated, in a 'pre ferred embodiment, in theaccompanying drawing, wherem- Figure 1 is a longitudinal sectional viewofthe device. Fig. 2, a similar view taken at right angles to the planeof Fig. 1, and

F ig. 3, a detailed View of the anti-friction bear ng between thespring, bearing against the valve-operated diaphragm, and its ad-' Likecharacters of reference designate I like parts in the several figures ofthe drawing. Referring to the drawing, the casing of the pressureregulating device consists of an upper casting '10 and a lower casting11, the upper casting being formed with an in let port 12, an .outletport 13, and, onthe under side, with a circular boss 14 to which issecured, for example byscrews 15, the lower casting. 11. Extendingacross thev diaphragm chamber 136, formed between the upper and lowercastings, is a flexible, preferably rubber, diaphragm 17, the edge ofwhich is clamped between the upper and lower members of the casing:Screwed into an opening extending through the upper casting 10 is a plugor sleeve 18 formed 23 for a valve 24. The'latter consists of a rubberFuller ball held in place on a stemv 2;) by aunt 26. The stem 25terminates in a piston 27 which"'w'orksiiiithe lower end of bore "32d.ia 9mel1.l Ziiihhhfifi 28 bearing aga nst diaphragm 17. v Theenla'rgement 20 of bore 19 is closedby a plug A spring 30 is interposedbetween ashoulder 31, formed on plug 18', and the head 28 on the endofthe'valve stem;

livoted to a bracket 32 at the edge of the lower casin I which efitendst rough an, opening 34*1n the member'11,,i's an arm-3a lower casingmember, antu is provided at its inner end with a button 35 which bearsagainst a thinmetal dish 36 on the under side of the rubber diaphragm17. A coiled spring 37 bears against the arm 33 under button Thepressure of this spring on the diaphragm is regulated by adjustingmember 38, the upper end of which is threaded and engages the interiorthreadin; of a tubular member 39 formed on the under side of easingmember 11. An autiiriction thrust bearing, is interposed be tween spring37 and its adjusting: member The adjusting member 38 is formed at itsupper end with a stud 38 on which is arranged an annular member i0formed with a race 4:1 for the anti-friction bulls 4-. The spring 37bears against an annular member 43 which rests on the balls and is keptin place by a washer l-l secured to the reduced end o1 stud 39 byoil-setting the extremity of the stud.

The pressure regulating device constructed as above described has beenfound to be capoble of a minutcncss of regulation and an accuracy andreliability in the .uiaintcnance of the pressure for which it is set,possessed, it is believed, by no pressure regulating device heretoforedevised. The function of theinoti-f 'iction thrust bearing, between thespring -37 and its adjusting meu'ibcr :38, is to eliminate the torsionof the spring against the adjusting member which, unless eliminoted orcounteracted, would umlcc very minute adjustment impossible. Theinterposition or the pivoted arm, with its bearing button 35, between;the spring 3'? and the diaphragm reduces friction to a minimum andthereby increases the scnsitiveneee of the device. I found that theFuller ball type of valve, when used in this connection, gave muchbetter satisfaction.than any other of the numerous types of valve withwhich err periment was made.

3.. In. a pressure regulating device, coml'iin on with a casing formedwith inlet and outlet ports, of a flexible diephra extending across saidusing, a valve or" ransre l to control communicutimi between said inletend outlet ports having}; a bearing a; net one side of said diuphmg u,an arm pivoted onsaid casing formed ch button bearing against the otherside of said diaphragm, and a spring which bears against said arm.

\ 2. In a pressure regulating device, the conliination with a casingformed with inlet and outlet ports, of a flexible diaphragm extendingacross said casing, a valve ar ranged to control communication betweensaid inlet and outlet ports havin a stem bearin a' ainst one side ofsaid dia )l11:1"'l1l.'

an arm pivoted on said casing formed with 9. button bearing against saiddiaphragm, a

spring bearing" against said arm, an auntment for the spring which isadjustable so as to vary the pressure of the spring against the arm, anda spring interposed between said casing and the opposite side of saiddiaphragm.

3. In a pressure regulating device, the courbiuation with a casingformed with inlet and outlet ports, or" a flexible disr hragm extendingacross said casing, a va ve arranged to control communication betweensaid inlet and outlet ports having a stem bearing against one side ofsaid diaphragm, an arm pivoted on said casing formed with a buttonbearing against the other side of said diuphragm, a helical spring whichbears at one end on said arm, an adjusting member against which theother end ofthe spring abuts which has a threaded engagement with said isin so as to be movable longitudinally in alinemen't with the axis ofsaid spring, and a spring interposed between said casing and theopposite side of said diaphragm. I

l. in a. pressure regulating device, the combination with a casingformed with inlet and outlet ports, of a flexible diaphragmextendingacross said casing, a valve urnugcd to control communicationbetween said inlet and outlet ports having a stem provided with aguiding piston and with an enlargement which bears against one side ofsaid diaphragm, a spring interposed between said casing and saidenlargement, an arm.-

pivoted on said using formed with a button bearing against the otherside of said diaphragm, a helical spring which bears at one end on saidarm, and an adjusting member against which the other end of the springabuts which has a threaded engagement with saidcasing so as to bemovuble'longitudinally in alinement with the axis of said spring.

In a pressure regulating device, the

combination with a, casing formed with inlet and outlet ports, of uflexible diaphragm extending across said casing, a valve arranged tocontrol communication between said inlet and outlet ports having a stembearing iinst one side of said diai'ihrugm, an arm pivoted on saidcasing "formed with a button bearing; against the other sideot said diephragin, a spring which bears against said arm, an adjusting member forsaid spring having a threaded engagement with the cusing, and ananti-friction thrust bearing interposed between said membc' and spring.

6. in a pressure regulating device, the combination vith a casing formedwith inlet and.outlet-ports, of a flexible diaphragm extending acrosssaid casing, 21 valve orrangcd to control communication between at oneend onv said arm, an adjusting member against which the other end of thespring nally in alinement with the axis of said spring, and ananti-friction thrust bearing interposed between said member and spring.

7 In a pressure regulating device, the combination with a casing formedwith in let and outlet ports, of a flexible diaphragm extending acrosssaid casing, a valve arranged to control communication between saidinlet and outlet ports having a stem bearing against one side of saiddiaphragm, an arm pivoted on said casingformed with a button bearingagainst the other side of said diaphragm, a helical spring which bearsat one end on said arm, an adjusting member against which the other endof the spring abuts which has a threaded engagement with said casing soas to be movable longitudinally in'alinement with the axis of saidspring, an anti-friction thrust bearing'intel-posed between said memberand spring, and a spring interposed between said casing and the oppositeside of said diaphragm 8. In a pressure regulating device, :thecombination with a casing formed with inlet and outlet ?'ports and acommunicating port, and with a rounded seat at one end of saidcommunicating port, of a rubber Fuller ball valve adapted to coiiperatewith said seat to control communication between said inletand outletports and provided with a stem, a diaphragm against which said stembears, a spring which bears against the opposite side of said diaphragm,and means for adjusting the pressure which,v said spring exerts againstsaid diaphragm.

9. In a pressure regulating device, the combination with a casing formedwithinlet and outlet ports and a communicating port, and with a roundedseat at one end of said communicating port, of a rubber Fuller ball"valve adapted to coiiperate with said-seat to control communicationbetween said inlet and outlet orts and providcd with a stem, a diapiragmagainst which said stem bears, springs bearing against opposite sides ofsaid diaphragm, and means for adjusting the pressure which one of saidsprings exerts against said diaphragm.

10. 1n---a p1'essure regulating. device, the combinatiomwith acasliigtformed with inletand outlet ports and'a communicating port, andwith a roundedsea-t at one end 'of said communicating port, a rubberFuLv lerball valve adapted to coiiperate with said seat and providedwith a stem having a guiding piston slidably arranged 'in said casing,a, diaphragm] against which said valve stem bears, springslarranged toexert pressure against oppositefsides of said dia-' phragm, an'd an adusti'ng member for one pressure against opposite sides of saiddiaphragm, an adjusting member for one of said springs having a threadedengagement with said casing, and a revoluble element on said adjustingmember against which said last named spring bears.

12. In a pressure regulating device, the combination, with a casingcomprising a pair of easing members, one of which isformed with inletand outletports, a communicating port and a valve seat at one end ofsaid communicating port, the other of which is'provided with a tubularextension interiorly threaded, a diaphragm clamped between said casingmembers, a rubber Fuller ball valve arranged to coiiperate with saidvalve seat and provided with a stem having an enlargement bearingagainst said diaphragm and a piston slidably mounted in said casing, aspring interposed between the casing and said enlargement, anarm'pivotedon said casing formed with a button bearing against thediaphragm on the opposite side from said valve, a helical spring whichbears against said arm, a

threaded adjusting member for said spring in said tubular extension onthe casing, and an anti-friction bearing interposed between said lastnamed spring andits adjusting member. v l

13. In a pressure regulating device, the

combination with a casing comprising a pair of easing members one ofwhich 13 formed with inlet and outlet ports, the other of which is,provided with a tubular extension in eriorly threaded, a plug arrangedin said%t named casing member formedwith a bore, constituting acommunicating port between said inlet and outlet po'rts, and with aroundedvseat, a fFuller ball valve adapted to coiiperate with said seatand having a stem formed with a piston slidably arranged in the 1 boreof said plug and with an enlargement, a rubber diaphragm clamped betweensaid casing against which the enlargement on the valve stem bears, aspring interposed between said plug and said enlargement, a metal diskonthe under side of said rubber diaphragm, an arm pivoted on said casingformed'with a button bearing against said disk, a spring bearing againstsaid arm, a threaded adjusting member for the spring in thetubumembers1m? projection 01? the ms 2 and? :1 revalubie which said lmit nI'cumbiziation with a camng fin'm elemenfi on said 9- 143;. a pressm sz29" casing, a boss on. the and of said valve 5mm which bears agninsisaid rubber dim? a sprmg mtgrposed between a part casing and said. b rrsa metal pints 0n the opposite side of sail diaphragm, member pivoted tothe casing at 0116 end vided at one end 'ith a buttnn against said platespring "which bears the lever opposite said button, and. an admarlngjust-able filiwximent for the 0mm and of spring.

15. In a ssu're combinatinn miha casing for and. outlet ports andc0nmmni W port ancl W'; a sea t {me a of ccmmunicating part 01? aresilient Fuller ball vzflve aeiaptad "5J0 c pen-rba Said to controlsotmxnuni -arxwn a n said inlet and cut-let ami )iU- vidgf. 'with astem; diaphx'agm :x'gmms: whuh stem bears, a spring which be 15% theoppasite sidie 0f mid phrag'm, and means for contissllii pressure whichsaid spring exmts the diaphragm.

AU ST- KADOW.

Witn-Qsses S. T. KLQTZ, W 1mm: GWEN.

